The document lists requirements for a position for a new English teacher. It states that candidates must have at least three years of teaching experience, must be over 25 years old, and must not smoke at school. Additionally, candidates do not have to be a native English speaker or have strong ICT skills, but they do have to be fun. The document provides information on the meanings and uses of "must", "mustn't", "have to", and "don't have to".

2.  He/She mustn’t be late.
Images: Exsodus and Nutdanai
 He/She must have at
Apikhomboonwaroot /
FreeDigitalPhotos.net
least three years’
experience in education.
 He/She doesn’t have to
have good ICT skills.
Imagine you are responsible
for finding a suitable
candidate to fill a position for  He/She has to be fun.
a new English teacher at the  He/She doesn’t have to
school. be a native speaker.
Work in pairs/small groups  He/She must be over 25
and decide which of the years old.
following sentences describe  He/She mustn’t smoke at
a good candidate. school.

3. The meaning of “must”
We use must to talk
 He/She must have at about _____________
least three years’
experience in education.
necessity/obligation

 absence of
 He/She must be over 25
years old. necessity/obligation
(= don’t need to)
• must + infinitive  prohibition
WITHOUT “to”
• Only for present
reference, not for
past reference

4. The meaning of “mustn’t”
We use mustn’t to talk
 He/She mustn’t be late. about _____________
 necessity/obligation
prohibition
 He/She mustn’t smoke  absence of
at school. necessity/obligation
(= don’t need to)
 prohibition
mustn’t + infinitive
WITHOUT “to”

5. The meaning of “have to”
 He/She has to be fun. We use have to to talk
about _____________
•They HAVE to be fun.  necessity/obligation
• DO you HAVE to work  absence of
on Saturday? necessity/obligation
• DOES she HAVE to work (= don’t need to)
on Saturday?
• In past  She/They HAD  prohibition
to be fun
• DID you HAVE to go to
the meeting yesterday?

6. The meaning of “don’t have to”
 He/She doesn’t have to We use don’t have to
be a native speaker. to talk about
 He/She doesn’t have to _____________
have good ICT skills.
absence of
necessity/obligation

• She DOESN’T HAVE to be a  necessity/obligation
absence of
native speaker. (= don’t need to)
necessity/obligation
but (= don’t need to)
• They DON’T HAVE to be  prohibition
native speakers.
• In past  She DIDN’T HAVE
to be a native speaker.

7. More information & practice
 Unit 23: must, have to, should
 Activity 1
 Activity 2
 Activity 4 (sentences C, D, E, I, J,
K)
 Activity 5
 Activity 6